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SPIP - plugins - embed code - Exemple
2 septembre 2013, par
Mis à jour : Septembre 2013
Langue : français
Type : Image
Autres articles (55)
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Pas question de marché, de cloud etc...
10 avril 2011Le vocabulaire utilisé sur ce site essaie d’éviter toute référence à la mode qui fleurit allègrement
sur le web 2.0 et dans les entreprises qui en vivent.
Vous êtes donc invité à bannir l’utilisation des termes "Brand", "Cloud", "Marché" etc...
Notre motivation est avant tout de créer un outil simple, accessible à pour tout le monde, favorisant
le partage de créations sur Internet et permettant aux auteurs de garder une autonomie optimale.
Aucun "contrat Gold ou Premium" n’est donc prévu, aucun (...) -
Activation de l’inscription des visiteurs
12 avril 2011, parIl est également possible d’activer l’inscription des visiteurs ce qui permettra à tout un chacun d’ouvrir soit même un compte sur le canal en question dans le cadre de projets ouverts par exemple.
Pour ce faire, il suffit d’aller dans l’espace de configuration du site en choisissant le sous menus "Gestion des utilisateurs". Le premier formulaire visible correspond à cette fonctionnalité.
Par défaut, MediaSPIP a créé lors de son initialisation un élément de menu dans le menu du haut de la page menant (...) -
Creating farms of unique websites
13 avril 2011, parMediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)
Sur d’autres sites (5014)
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Creating video from images produces black screen video for certain image formats [duplicate]
30 mai 2018, par varmashrivastavaThis question already has an answer here :
I am using below command to create video from images.The command works fine for most images but for png images the video created cannot be played and I just get a black screen.
String[] command = new String[]{"-y", "-f", "concat", "-safe", "0", "-i", src.getAbsolutePath(), "-vsync", "vfr", "-vf", "scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2", dest.getAbsolutePath()};Here destination file path has mp4 format..
Whats wrong with my command ? -
ffmpeg to convert file to webm returns in error
14 avril 2019, par user3184895i have a self-recorded file in .ts format and want to convert it to three different formats(.mp4, .ogg and .webm).
for that i use my brandnew debian9 with following commands :
/usr/bin/ffmpeg -y -i source.ts -strict experimental -r 25 -b 18550k -bt 22792k -acodec aac -ac 2 -ar 48000 -ab 320k output.mp4/usr/bin/ffmpeg -y -i source.ts -r 25 -b 18550k -bt 22792k -vcodec libtheora -acodec libvorbis -ac 2 -ar 48000 -ab 320k output.ogg/usr/bin/ffmpeg -y -i source.ts -r 25 -b 18550k -bt 22792k -ac 2 -ar 48000 -ab 320k output.webmSource-File :
General
ID : 1019 (0x3FB)
Complete name : test.ts
Format : MPEG-TS
File size : 85.9 MiB
Duration : 56 s 490 ms
Overall bit rate mode : Variable
Overall bit rate : 12.7 Mb/s
Video
ID : 5101 (0x13ED)
Menu ID : 10301 (0x283D)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : 27
Duration : 55 s 880 ms
Bit rate : 11.1 Mb/s
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate : 50.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.241
Stream size : 74.1 MiB (86%)
Audio #1
ID : 5102 (0x13EE)
Menu ID : 10301 (0x283D)
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 2
Codec ID : 3
Duration : 56 s 448 ms
Bit rate mode : Constant
Bit rate : 256 kb/s
Channel(s) : 2 channels
Sampling rate : 48.0 kHz
Compression mode : Lossy
Delay relative to video : -1 s 136 ms
Stream size : 1.72 MiB (2%)
Language : German
Audio #2
ID : 5103 (0x13EF)
Menu ID : 10301 (0x283D)
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 2
Codec ID : 3
Duration : 56 s 448 ms
Bit rate mode : Constant
Bit rate : 256 kb/s
Channel(s) : 2 channels
Sampling rate : 48.0 kHz
Compression mode : Lossy
Delay relative to video : -1 s 136 ms
Stream size : 1.72 MiB (2%)
descriptor_tag_extension : 6
Audio #3
ID : 5106 (0x13F2)
Menu ID : 10301 (0x283D)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : 6
Duration : 56 s 480 ms
Bit rate mode : Constant
Bit rate : 448 kb/s
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 spf)
Bit depth : 16 bits
Compression mode : Lossy
Delay relative to video : -1 s 168 ms
Stream size : 3.02 MiB (4%)
Language : German
Text
ID : 5105 (0x13F1)
Menu ID : 10301 (0x283D)
Format : DVB Subtitle
Codec ID : 6
Duration : 54 s 800 ms
Delay relative to video : 2 s 520 ms
Language : German
Other
ID : 5104 (0x13F0)-100
Menu ID : 10301 (0x283D)
Format : Teletext
Language : German
Menu
ID : 5100 (0x13EC)
Menu ID : 10301 (0x283D)
Duration : 56 s 490 ms
List : 1170 (0x492) () / 1176 (0x498) () / 2171 (0x87B) () / 5101 (0x13ED) (AVC) / 5102 (0x13EE) (MPEG Audio, German) / 5103 (0x13EF) (MPEG Audio) / 5104 (0x13F0)-100 (Teletext, de) / 5105 (0x13F1) (DVB Subtitle, German) / 5106 (0x13F2) (AC-3, German) / 5108 (0x13F4) () / 5172 (0x1434) ()
Language : / / / / German / / German / German / GermanWhy i am doing that ? I just play arround with a privat intranet (web-application) to stream my own recorded files on different clients (Smartphone, Tablet, Desktop). Thats also the reason for the different formats (.mp4, .ogg, .webm)
My current problem is : The command to convert it to .webm returns following error :
/usr/bin/ffmpeg -y -i test.ts -r 25 -b 18550k -bt 22792k -ac 2 -ar 48000 -ab 320k output.webm
ffmpeg version 3.2.12-1~deb9u1 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
configuration: --prefix=/usr --extra-version='1~deb9u1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
libavutil 55. 34.101 / 55. 34.101
libavcodec 57. 64.101 / 57. 64.101
libavformat 57. 56.101 / 57. 56.101
libavdevice 57. 1.100 / 57. 1.100
libavfilter 6. 65.100 / 6. 65.100
libavresample 3. 1. 0 / 3. 1. 0
libswscale 4. 2.100 / 4. 2.100
libswresample 2. 3.100 / 2. 3.100
libpostproc 54. 1.100 / 54. 1.100
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[mpegts @ 0x557535ade440] start time for stream 9 is not set in estimate_timings_from_pts
[mpegts @ 0x557535ade440] PES packet size mismatch
[mpegts @ 0x557535ade440] Could not find codec parameters for stream 0 (Unknown: none ([5][0][0][0] / 0x0005)): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[mpegts @ 0x557535ade440] Could not find codec parameters for stream 1 (Unknown: none ([12][0][0][0] / 0x000C)): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[mpegts @ 0x557535ade440] Could not find codec parameters for stream 2 (Unknown: none ([11][0][0][0] / 0x000B)): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[mpegts @ 0x557535ade440] Could not find codec parameters for stream 10 (Unknown: none ([11][0][0][0] / 0x000B)): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, mpegts, from 'test.ts':
Duration: 00:00:58.04, start: 86615.181389, bitrate: 12418 kb/s
Program 10301
Stream #0:0[0x492]: Unknown: none ([5][0][0][0] / 0x0005)
Stream #0:1[0x498]: Unknown: none ([12][0][0][0] / 0x000C)
Stream #0:2[0x87b]: Unknown: none ([11][0][0][0] / 0x000B)
Stream #0:3[0x13ed]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k tbn, 100 tbc
Stream #0:4[0x13ee](deu): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 256 kb/s
Stream #0:5[0x13ef](mis): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 256 kb/s
Stream #0:6[0x13f0](deu): Subtitle: dvb_teletext ([6][0][0][0] / 0x0006)
Stream #0:7[0x13f1](deu): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006) (hearing impaired)
Stream #0:8[0x13f2](deu): Audio: ac3 ([6][0][0][0] / 0x0006), 48000 Hz, stereo, fltp, 448 kb/s
Stream #0:9[0x13f4]: Data: bin_data ([6][0][0][0] / 0x0006)
Stream #0:10[0x1434]: Unknown: none ([11][0][0][0] / 0x000B)
Program 10302
Program 10303
Program 10304
Please use -b:a or -b:v, -b is ambiguous
[libvpx-vp9 @ 0x557535ba6d00] v1.6.1
Stream mapping:
Stream #0:3 -> #0:0 (h264 (native) -> vp9 (libvpx-vp9))
Stream #0:4 -> #0:1 (mp2 (native) -> opus (libopus))
Stream #0:6 -> #0:2 (dvb_teletext (libzvbi_teletextdec) -> webvtt (native))
Error while opening encoder for output stream #0:2 - maybe incorrect parameters such as bit_rate, rate, width or heighti dont understand the problem, because the convertions to .ogg or .mp4 are workin. So i cannot be a problem with the source-codecs. Does anyone have any idea what my problem might be
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Overlay filter in LibAV/FFMpeg returns strange (tripled) frame in C
28 juillet 2014, par gkuczeraI tried to make a program, which merges two frames. I use LibAV (libav-win32-20140428) under Windows 7 64 and Visual Studio 2013.
But the result is quite odd.
The filter which was used is Overlay. When I change the graph, to the one, that uses only one stream and add FADE effect, everything works like a charm. But OVERLAY and eg. DRAWBOX give me strange distortion (three frames on one and black and white effect). Here is the code :
static int init_filter_graph(AVFilterGraph **pGraph, AVFilterContext **pSrc1, AVFilterContext **pSink)
{
AVFilterGraph* tFilterGraph;
AVFilterContext* tBufferContext1;
AVFilter* tBuffer1;
AVFilterContext* tColorContext;
AVFilter* tColor;
AVFilterContext* tOverlayContext;
AVFilter* tOverlay;
AVFilterContext* tBufferSinkContext;
AVFilter* tBufferSink;
int tError;
/* Create a new filtergraph, which will contain all the filters. */
tFilterGraph = avfilter_graph_alloc();
if (!tFilterGraph) {
return -1;
}
{ // BUFFER FILTER 1
tBuffer1 = avfilter_get_by_name("buffer");
if (!tBuffer1) {
return -1;
}
tBufferContext1 = avfilter_graph_alloc_filter(tFilterGraph, tBuffer1, "src1");
if (!tBufferContext1) {
return -1;
}
av_dict_set(&tOptionsDict, "width", "320", 0);
av_dict_set(&tOptionsDict, "height", "240", 0);
av_dict_set(&tOptionsDict, "pix_fmt", "bgr24", 0);
av_dict_set(&tOptionsDict, "time_base", "1/25", 0);
av_dict_set(&tOptionsDict, "sar", "1", 0);
tError = avfilter_init_dict(tBufferContext1, &tOptionsDict);
av_dict_free(&tOptionsDict);
if (tError < 0) {
return tError;
}
}
{ // COLOR FILTER
tColor = avfilter_get_by_name("color");
if (!tColor) {
return -1;
}
tColorContext = avfilter_graph_alloc_filter(tFilterGraph, tColor, "color");
if (!tColorContext) {
return -1;
}
av_dict_set(&tOptionsDict, "color", "white", 0);
av_dict_set(&tOptionsDict, "size", "20x120", 0);
av_dict_set(&tOptionsDict, "framerate", "1/25", 0);
tError = avfilter_init_dict(tColorContext, &tOptionsDict);
av_dict_free(&tOptionsDict);
if (tError < 0) {
return tError;
}
}
{ // OVERLAY FILTER
tOverlay = avfilter_get_by_name("overlay");
if (!tOverlay) {
return -1;
}
tOverlayContext = avfilter_graph_alloc_filter(tFilterGraph, tOverlay, "overlay");
if (!tOverlayContext) {
return -1;
}
av_dict_set(&tOptionsDict, "x", "0", 0);
av_dict_set(&tOptionsDict, "y", "0", 0);
av_dict_set(&tOptionsDict, "main_w", "120", 0);
av_dict_set(&tOptionsDict, "main_h", "140", 0);
av_dict_set(&tOptionsDict, "overlay_w", "320", 0);
av_dict_set(&tOptionsDict, "overlay_h", "240", 0);
tError = avfilter_init_dict(tOverlayContext, &tOptionsDict);
av_dict_free(&tOptionsDict);
if (tError < 0) {
return tError;
}
}
{ // BUFFERSINK FILTER
tBufferSink = avfilter_get_by_name("buffersink");
if (!tBufferSink) {
return -1;
}
tBufferSinkContext = avfilter_graph_alloc_filter(tFilterGraph, tBufferSink, "sink");
if (!tBufferSinkContext) {
return -1;
}
tError = avfilter_init_str(tBufferSinkContext, NULL);
if (tError < 0) {
return tError;
}
}
// Linking graph
tError = avfilter_link(tBufferContext1, 0, tOverlayContext, 0);
if (tError >= 0) {
tError = avfilter_link(tColorContext, 0, tOverlayContext, 1);
}
if (tError >= 0) {
tError = avfilter_link(tOverlayContext, 0, tBufferSinkContext, 0);
}
if (tError < 0) {
return tError;
}
tError = avfilter_graph_config(tFilterGraph, NULL);
if (tError < 0) {
return tError;
}
*pGraph = tFilterGraph;
*pSrc1 = tBufferContext1;
*pSink = tBufferSinkContext;
return 0;
}What do you think is the reason ?
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